Today (June 9th, 2011) would have been Les Paul's 96th birthday, and Google is honoring that with a cool gadget on the top of their search engine, that looks like this:
Google regularly creates these little doodles of their logo, but this is probably one of the cooler ones they've come up with. If you hover your mouse over the strings, each will play a different note.
For more information on Les and his influence on the electric guitar, checkout the post A Local Look At Les Paul.
You might also like to checkout my post on the 50 Most Bizarre Guitars!